After you publish a video, YouTube automatically changes the player to fit the video size.

Don’t burn-in bars, as this prevents YouTube from displaying your video in the best way.

Follow the steps to publish your video.

When you publish your video, YouTube will determine the best way to display the content. Whether the video is vertical, square, or horizontal, the video will fit the screen.

For the best viewing experience on all devices, follow the steps above. The player automatically adjusts to the video on the YouTube mobile app and desktop.

"Published on" date on watch page

When you make a video public on YouTube, the "published on" date on the watch page is based on Pacific Standard Time (PST). If you want to make a video public with a specific date on the watch page, make sure that your video is uploaded or scheduled to go public for that date in Pacific Standard Time.

You may see a different publishing date on the watch page than the one you see in your Video Manager if you:

Upload a public video in a timezone ahead of PST

Schedule a private video to go public at a specific time in a timezone ahead of PST